Hick's Law: Cognitive Load in Choice Architecture

Hick's Law (or the Hick-Hyman Law) models human decision-making: the time it takes to make a decision increases logarithmically as the number of choices increases:

$$T = b \log_2(n + 1)$$

When an interface inundates a user with 30 competing links or an unorganized form with 25 visible fields, cognitive load spikes, resulting in decision paralysis or abandonment.

UX Countermeasures: Progressive Disclosure

To preserve low cognitive load without stripping advanced capability, designers use progressive disclosure:

• Present only the primary, essential options during initial encounter.
• Defer secondary, advanced, or rare settings to secondary screens, collapsible accordions, or modal panels upon explicit user request.
• Group complex multi-step forms into bite-sized stepped wizards.